package com.cdream.basic.algorithm;

import org.junit.Test;

/**
 * @author cdream
 * @date 2022/4/10
 */
public class TempClass {
    @Test
    public void showBinary(){
        System.out.println( Integer.toBinaryString(-1));
        System.out.println( Integer.toBinaryString((int) Math.pow(2d,31d)));
        System.out.println((1<<31) - 1);
    }
}
